EdLoach has commented on the following diary entries

You could think of it along the lines of "Where can I eat?" and if the cuisine tag is provided that is additional information (along with say phone number and delivery hours for some of the local takeaways).

I noticed concrete markers at the edge of our street at various points as I walked home from a cashpoint last night. They were all similar. One had SV on it, one (next to a fire hydrant) had WO and another had AV. A bit of Google searching (in particular a self lay pdf from Severn Trent) suggests they are to mark Sluice Valves, Wash Outs, and possibly Air Valves. These concrete ones have two numbers (like fire hydrants) marking diameter and distance. I'm guessing you've found an earlier version.

Adding house numbers in rural Tendring there are many places that only have house names (and one hamlet, Raven's Green, doesn't seem to have a road name). New houses added in ones or twos also then tend to gain names, but if a new housing development (with new road name) gets built, they then tend to get numbers.

I've been using the terracer tool with latest stable release today. What do I have to do to reproduce your error? I'm about to try looking at the keep outline way option, which I always have set not to do so.

It is a dramatic drop in December, and there are so many lines I can't be sure, but it looks like December is often lower than the month before, particularly 2012-12 if I've squinted at the graph correctly.

Today I was delivering letters to every house in a certain area, as I did last year, to do with checking everyone has registered to vote. The boxes of letters come "sort of" sorted, but as I'd mapped all the addresses in this area previously I used OSM to make sure I didn't waste time zig-zagging across the road to optimise the route (deliver one side, then deliver the other on the way back to the car). One letter was addressed to a named house which, when I got there, was different to the name at the end of the drive. Fortunately someone came out then and confirmed the house had changed name recently, which had been confirmed officially with whoever is the authoritiitve source (I forget the difference between Royal Mail and the Post Office in these instances) but that change hadn't reached the local council (who was sending these letters). I could have used Vespucci on my phone to correct the name in OSM there and then, but I used the OSM website to add a note so I could remind my wife (who signed up for these deliveries) to let the council know they had the wrong name. Now I've created the now I've emailed her a link to it (she is away this weekend), and will get around to correcting OSM tomorrow, probably.

Generally, I prefer to use my phone to make notes so I can use a keyboard and mouse to make the changes when I get the notes via the RSS feed.

Confession, being UK based I prefer the current colour scheme. Having said that, if you are going to change it then none of your examples above currently distinguish motorways from trunk roads sufficiently (see US41 on the right of each of your images above).

The solid line, assuming it is the same as for cycle lanes, means that other traffic shouldn't cross into those lanes (so if you're doing lane access tagging you'd want bicycle=no and foot=no for the duck lane).

A friend mapped his village and mentioned having done so on social media. I looked at the map of Clacton and thought "I could do that", asked my friend's advice about what GPS device to get, then while waiting for it to arrive corrected some road name spellings in Wolverhampton where I used to live. 6.5 years later and it is still possible to improve the map locally - with a push I think Tendring might be address complete this year (I've surveyed the "missing" bits of 2 more part surveyed parishes yesterday and today - just now need to get around to entering the information).

If it is a Copyright Easter Egg it is more likely to catch users that aren't attributing rather than those such as OpenStreetMap that are. It does suggest that all ways with a source:name=OS* tag should really be surveyed at some point though.

That is something I have noticed when surveying locally - it gets much harder at dusk as it gets harder to read some house numbers from the street. I find myself thinking 'What if they need to call an ambulance?' and then think perhaps even my own house could do with a more visible number for such cases (it is in the glass of the door, which many people fail to spot when they first visit).

SOSM - thanks, I've used Vespucci for other mapping, but not for addresses. I tend to prefer adding buildings once you know how many properties they represent (so I can use the JOSM terracer plugin to split a rectangle, rather than drawing each property, drawing the outer rectangle starting with the short side at the high number end seems to work best).